After embracing her parents tightly in the safe house, Su Yao quickly calmed down and began to take stock of the safe house's defenses and survival resources. She knew that this heat wave would not be easy to survive.

Under the continuous baking heat, the insulation layer of the safe house had begun to show signs of softening in some areas. Su Yao took out specially made reinforcement materials from her spatial storage and, together with her father, braving the rising temperature inside, began emergency repairs to the weak points. Every movement had to be precise and swift, because every second of delay could increase the possibility of danger intruding. Her mother was responsible for passing tools to them. The three of them worked in silence, but their cooperation was seamless, a testament to the trust and teamwork honed on the brink of life and death.

"Yaoyao, how long can this insulation layer last?" her father asked worriedly as he secured the materials.

Su Yao wiped the sweat from her forehead, her eyes grave: "At the current intensity of the heat, we can only last for three days at most. If the heat intensifies, the time will be even shorter. We must simultaneously find ways to lower the indoor temperature and seek new energy sources."

She turned and walked to the corner where supplies were stored, taking out several small refrigeration devices from her spatial storage. These devices were scavenged during a previous expedition to an abandoned research base; although their power was limited, they were better than nothing. Using her special ability, Su Yao carefully adjusted the devices' energy output to match the safe house's energy system, avoiding excessive energy consumption.

As the cooling system started, a slight coolness spread through the room, but Su Yao knew it was just a drop in the ocean. She activated the system again, searching for usable energy resources around the safe house. After scanning for a long time, the system finally detected a possible geothermal energy source in a valley two kilometers away from the safe house.

"Mom and Dad, I need to go out for a bit. I'm going to the valley to see if we can find any new energy sources," Su Yao said firmly.

Worry immediately appeared on her parents' faces. "Yaoyao, it's too dangerous outside. The high temperature and unknown dangers could kill you at any time." Her mother held her hand, her eyes full of reluctance.

Su Yao gently patted her mother's hand: "Mom, I know it's dangerous, but if we don't find a new energy source, we won't last long in this safe house. I have a system and superpowers, I'll protect myself."

After saying that, she put on her heat-resistant protective suit, took the necessary tools and weapons, and resolutely walked out of the safe house.

As soon as she stepped out of the safe house, a wave of intense heat washed over her like a raging torrent. Su Yao felt her breath catch in her throat, as if her lungs were about to be ignited. She activated her supernatural abilities, forming a thin energy shield around her body to barely withstand the intense heat, and then struggled forward toward the valley.

The ground beneath her feet was scorching hot, each step feeling like walking on burning coals. Su Yao's steps were firm and steady as she continuously used the system to scan her surroundings, remaining vigilant for any potential dangers.

Upon finally arriving at the valley, Su Yao discovered that the geothermal reaction here was even more intense than she had imagined. However, the high temperature also caused the geological structure to be extremely unstable, with cracks frequently appearing on the ground, spewing out scalding steam and magma.

Su Yao cautiously approached the geothermal source, retrieved a detection instrument from her spatial storage, and began analyzing the energy's usability. Just as she focused on the detection, suddenly, the ground beneath her feet shook violently, and a huge crack rapidly spread out around her.

Su Yao reacted quickly, lightly touching the ground with her toes, her body leaping backward several meters like a swallow. Her heart suddenly raced, knowing she had just walked through the gates of hell.

After a difficult process of exploration and debugging, Su Yao finally succeeded in converting geothermal energy into energy usable in the safe house and then guiding it back to the safe house through an energy transmission device.

After receiving a new energy supply, the safe house's insulation was enhanced, and the cooling system was able to operate at full capacity. The temperature inside gradually decreased, and Su Yao and her parents finally breathed a sigh of relief.

However, Su Yao understood that this was only a temporary relief from the crisis. The terror of the high-temperature apocalypse still loomed over them, and more challenges and dangers awaited them in the future. She sat in a corner of the safe house, recovering her depleted powers while contemplating her next survival strategy. In this cruel world, only by constantly strengthening themselves and utilizing all available resources could they find a glimmer of hope in dire straits and protect their families and that small, safe haven.